Since you do have an opportunity on the Chinook, grab it.
I have spent some time with several popular tube units mentioned on Agon. The Chinookwill put your table/cart in a good light. As mentioned, you can also fine tune it by replacing just one of the 6DJ8's to personalize the sound. Power cord also, is another tweaky consideration.
2 other units that that are popular are the Herron and Allnic. They show up now and then on Agon.
I noticed, having spent time with these nice units, it becomes hair splitting, with one or the other offering subtle nuance. Subjective-all "good" For me it then becomes, what does the most expensive unit offer, and is it REALLY worth it?